20973465

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3613}}^1$

素因数の和:3670

約数の個数: 32

約数和(自身を含む): 38163840

約数和(自身を除く): 17190375

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3613, 5805, 10839, 18065, 32517, 54195, 97551, 155359, 162585, 466077, 487755, 776795, 1398231, 2330385, 4194693, 6991155, 20973465]

約数ペア:

[(1, 20973465), (3, 6991155), (5, 4194693), (9, 2330385), (15, 1398231), (27, 776795), (43, 487755), (45, 466077), (129, 162585), (135, 155359), (215, 97551), (387, 54195), (645, 32517), (1161, 18065), (1935, 10839), (3613, 5805)]